but he can't assume the females will actually turn up. 但却没有看到雌驴的出现
and in prime condition, but only a few will mate. 精神焕发.然而只有为数不多的公牛会和母牛交配
but no animal is immune to intensive hunting by man 然而没有哪种动物能够幸免于人类的大捕杀
But further south, summers are longer and the grasslands flourish. 但是在更远的南边 夏天的时间更长,草原更加茂盛
But the mother has given her cubs the best possible start in life. 但是母亲已经给了它们一个最好的开端
But it's no easy task to locate prey that never stops travelling. 但若想找到这些 脚步永不停止的猎物又谈何容易?
She's driven away from every nest, but hunger compels her to continue. 这只狐狸四处碰壁但在饥饿的驱使下始终不肯放弃努力
It's a long way to travel, but for a short period, the tundra is the ideal place for a grazer. 北极的苔原虽然路途遥远, 但仍有短短的一段时间是食草动物的天堂